Sediments
What are the remains of living organisms that settle on the ocean floor?
Biogenous sediment
What is the term for an object's ability to float?
Buoyancy
Which ion is commonly used to measure salinity in seawater?
Chloride
Which marine organism is least dependent on water for support?
Kelp
Which gas is most common in seawater under normal conditions?
Nitrogen
What type of sediment is derived from weathering of rock?
Lithogenous sediment
What occurs when an object's buoyancy equals its density?
The object floats
What is the effect of high evaporation on surface salinity?
Increases salinity
What color wavelength is most easily reflected in seawater?
Blue
What happens to oxygen consumption as temperature increases?
It increases
Which type of sediment includes minerals such as quartz?
Lithogenous sediment
What happens to an object that displaces water equal to its volume?
It is buoyant
Which factors can cause variations in salinity?
Precipitation, evaporation, freshwater discharge
What role does photosynthesis play in marine ecosystems?
It produces oxygen and organic matter
What number on the pH scale indicates high acidity?
1
What is the primary component of Lithogenous sediment?
Eroded particles and debris
What is the relationship between density and flotation?
An object floats if its density is less than the fluid
How does salinity relate to water clarity?
Higher salinity decreases water clarity
What is the compensation zone?
The depth where photosynthesis equals respiration
How does depth affect dissolved gases in water?
Generally, dissolved gas concentration increases with depth
Which sediment type is formed from chemical reactions?
Hydrogenous sediment
What is the definition of buoyancy?
The ability of an object to float in a fluid
What is the relationship between salinity and density?
As salinity increases, density increases
How do bottom-dwelling marine animals use color for camouflage?
They are often red to blend into dark environments
What occurs to oxygen levels as carbon dioxide increases?
Oxygen levels decrease